Changing an Atom or Two of an Electrochromic Material Changes its Color

Machine Design says: A serendipitous discovery by a grad student at the Georgia Institute of Technology has led to materials that quickly change color from completely clear to a range of vibrant hues and then back again. The work could have applications in everything from skyscraper windows that control the amount of light and heat entering and leaving a building, to switchable camouflage and visors for the military, and even color-changing cosmetics and clothing.

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